Home / Unit-3 Sets and Relations / Question
MCQ
If U = {1, 2, 3, 4, 5}, A = {1, 2} and B = {2, 3}, then (A ∪ B)' =
Unit-3 Sets and Relations
A {4, 5}
B {1, 2, 3}
C {2}
D {1, 3, 4, 5}
Explanation

A ∪ B = {1, 2, 3}, so its complement in U is {4, 5}; this matches A' ∩ B' by De Morgan's law.

Related MCQs

If A = {1, 2, 3} and B = {2, 3, 4}, then A ∩ B =
Unit-3 Sets and Relations View
In general, for non-empty sets A and B:
Unit-3 Sets and Relations View
The set {x : x ∈ N and 1 < x < 2} is:
Unit-3 Sets and Relations View
Two ordered pairs (a, b) and (c, d) are equal if and only if:
Unit-3 Sets and Relations View
Which of the following sets is infinite?
Unit-3 Sets and Relations View
The set builder form of the set of all even natural numbers is:
Unit-3 Sets and Relations View